Cofiring of wood cocombustion

Markku Orjala, Riikka Ingalsuo, Tapio Patrikainen, Martti Mäkipää, Jouni Hämäläinen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Abstract

The objective of this study was to determine safe combustion conditions in circulating and bubbling fluidised-bed boilers for wood chips produced by different forest harvesting chains. The optimal mixing ratios for typical and commonly used forest chip qualities, as well as for mixtures of chips and other fuels, under steam temperatures typical of circulating and bubbling fluidised-bed boilers are also determined. Emissions are also reviewed. The combustion and co-firing properties of fuels produced by different forest chains, and their suitability were studied first in VTT's test facilities and later in industrial-scale power plant boilers. The formation of alkaline and chlorine compounds and their effect on boiler fouling were studied by deposit probes in the test facilities. Deposits and phase changes in their compounds and corrosion risks are analysed by SEM-EDX. Utilisation of logging residue chips can cause deposition on heat exchanger surfaces and corrosion due to chlorine of wood ash. The harmful formation of alkaline and chlorine compounds on boiler surfaces could be prevented by co-firing sulphur-containing fuel.
Original languageEnglish
Title of host publicationNordic Treasure Hunt
Subtitle of host publicationExtracting Energy from Forest Residues
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages87-105
ISBN (Electronic)951-38-5709-3
ISBN (Print)951-38-5708-5
Publication statusPublished - 2000
MoE publication typeA4 Article in a conference publication
EventNordic Treasure Hunt: Extracting Energy from Forest Residue: International Wood Energy Workshop - Jyväskylä, Finland
Duration: 30 Aug 200030 Aug 2000

Publication series

NameVTT Symposium
PublisherVTT
Number208
ISSN (Print)0357-9387
ISSN (Electronic)1455-0873

Workshop

WorkshopNordic Treasure Hunt: Extracting Energy from Forest Residue
CountryFinland
CityJyväskylä
Period30/08/0030/08/00

Fingerprint

Boilers
Wood
Chlorine compounds
Test facilities
Ashes
Deposits
Corrosion
Fouling
Chlorine
Heat exchangers
Energy dispersive spectroscopy
Power plants
Steam
Sulfur
Scanning electron microscopy
Temperature

Cite this

Orjala, M., Ingalsuo, R., Patrikainen, T., Mäkipää, M., & Hämäläinen, J. (2000). Cofiring of wood cocombustion. In Nordic Treasure Hunt: Extracting Energy from Forest Residues (pp. 87-105). Espoo: VTT Technical Research Centre of Finland. VTT Symposium, No. 208
Orjala, Markku ; Ingalsuo, Riikka ; Patrikainen, Tapio ; Mäkipää, Martti ; Hämäläinen, Jouni. / Cofiring of wood cocombustion. Nordic Treasure Hunt: Extracting Energy from Forest Residues. Espoo : VTT Technical Research Centre of Finland, 2000. pp. 87-105 (VTT Symposium; No. 208).
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abstract = "The objective of this study was to determine safe combustion conditions in circulating and bubbling fluidised-bed boilers for wood chips produced by different forest harvesting chains. The optimal mixing ratios for typical and commonly used forest chip qualities, as well as for mixtures of chips and other fuels, under steam temperatures typical of circulating and bubbling fluidised-bed boilers are also determined. Emissions are also reviewed. The combustion and co-firing properties of fuels produced by different forest chains, and their suitability were studied first in VTT's test facilities and later in industrial-scale power plant boilers. The formation of alkaline and chlorine compounds and their effect on boiler fouling were studied by deposit probes in the test facilities. Deposits and phase changes in their compounds and corrosion risks are analysed by SEM-EDX. Utilisation of logging residue chips can cause deposition on heat exchanger surfaces and corrosion due to chlorine of wood ash. The harmful formation of alkaline and chlorine compounds on boiler surfaces could be prevented by co-firing sulphur-containing fuel.",
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Orjala, M, Ingalsuo, R, Patrikainen, T, Mäkipää, M & Hämäläinen, J 2000, Cofiring of wood cocombustion. in Nordic Treasure Hunt: Extracting Energy from Forest Residues. VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 208, pp. 87-105, Nordic Treasure Hunt: Extracting Energy from Forest Residue, Jyväskylä, Finland, 30/08/00.

Cofiring of wood cocombustion. / Orjala, Markku; Ingalsuo, Riikka; Patrikainen, Tapio; Mäkipää, Martti; Hämäläinen, Jouni.

Nordic Treasure Hunt: Extracting Energy from Forest Residues. Espoo : VTT Technical Research Centre of Finland, 2000. p. 87-105 (VTT Symposium; No. 208).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

TY - GEN

T1 - Cofiring of wood cocombustion

AU - Orjala, Markku

AU - Ingalsuo, Riikka

AU - Patrikainen, Tapio

AU - Mäkipää, Martti

AU - Hämäläinen, Jouni

PY - 2000

Y1 - 2000

N2 - The objective of this study was to determine safe combustion conditions in circulating and bubbling fluidised-bed boilers for wood chips produced by different forest harvesting chains. The optimal mixing ratios for typical and commonly used forest chip qualities, as well as for mixtures of chips and other fuels, under steam temperatures typical of circulating and bubbling fluidised-bed boilers are also determined. Emissions are also reviewed. The combustion and co-firing properties of fuels produced by different forest chains, and their suitability were studied first in VTT's test facilities and later in industrial-scale power plant boilers. The formation of alkaline and chlorine compounds and their effect on boiler fouling were studied by deposit probes in the test facilities. Deposits and phase changes in their compounds and corrosion risks are analysed by SEM-EDX. Utilisation of logging residue chips can cause deposition on heat exchanger surfaces and corrosion due to chlorine of wood ash. The harmful formation of alkaline and chlorine compounds on boiler surfaces could be prevented by co-firing sulphur-containing fuel.

AB - The objective of this study was to determine safe combustion conditions in circulating and bubbling fluidised-bed boilers for wood chips produced by different forest harvesting chains. The optimal mixing ratios for typical and commonly used forest chip qualities, as well as for mixtures of chips and other fuels, under steam temperatures typical of circulating and bubbling fluidised-bed boilers are also determined. Emissions are also reviewed. The combustion and co-firing properties of fuels produced by different forest chains, and their suitability were studied first in VTT's test facilities and later in industrial-scale power plant boilers. The formation of alkaline and chlorine compounds and their effect on boiler fouling were studied by deposit probes in the test facilities. Deposits and phase changes in their compounds and corrosion risks are analysed by SEM-EDX. Utilisation of logging residue chips can cause deposition on heat exchanger surfaces and corrosion due to chlorine of wood ash. The harmful formation of alkaline and chlorine compounds on boiler surfaces could be prevented by co-firing sulphur-containing fuel.

M3 - Conference article in proceedings

SN - 951-38-5708-5

T3 - VTT Symposium

SP - 87

EP - 105

BT - Nordic Treasure Hunt

PB - VTT Technical Research Centre of Finland

CY - Espoo

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Orjala M, Ingalsuo R, Patrikainen T, Mäkipää M, Hämäläinen J. Cofiring of wood cocombustion. In Nordic Treasure Hunt: Extracting Energy from Forest Residues. Espoo: VTT Technical Research Centre of Finland. 2000. p. 87-105. (VTT Symposium; No. 208).